What EV Charger Do You Need for a 2027 Cadillac Vistiq 11kW Charger?
Forty-eight amps is the exact target. Your car accepts up to 48 amps of Level 2 charging current. Anything smaller leaves speed on the table. Anything larger goes to waste because the onboard charger caps the draw.
The numbers
| Maximum AC charging rate | 11.5 kW (48 A) |
|---|---|
| Charger size to buy | 48 A |
| Circuit breaker required | 60 A |
| Outlet / connection | hardwired (a 48 A EVSE must be hardwired -- no household receptacle is rated for it) |
| Charge port | J1772 |
| Full charge on Level 2 | about 10.4 hours |
| Range added per hour (Level 2) | about 29 miles |
| Full charge on a 120 V outlet | about 83 hours |
| Range added per hour (120 V) | about 3.7 miles |
| EPA rated range | 305 miles |
| Energy for a full charge | about 120.0 kWh at the wall |
Why 48 amps and not more
The onboard hardware tops out at 48 amps. Pumping 48 amps into the 120.0 kilowatt hour battery pack fills a completely drained battery in 10.4 hours, adding 29 miles of range every hour. Plugging into a larger 50 amp charger changes nothing for the vehicle because the car limits the intake anyway. You get 27 miles per hour during EPA testing cycles due to standard test losses. Stick with a 48 amp Level 2 setup to match the car's maximum AC acceptance rate.
What the install involves
You need a 60 amp breaker for this setup. A 48 amp continuous load requires a dedicated 60 amp circuit to prevent tripping the breaker during long overnight sessions. Hardwire the unit directly to the electrical wire because no household receptacle is rated for a continuous 48 amp draw. Call an electrician to run the heavy gauge wire, land it on a new 60 amp breaker, and check that your main panel has spare capacity for the load.
Chargers that match this car
Energy monitoring built in. Hardwire it for the full 48 A.
Compact unit, good for tight garages.
Adjustable from 16 A to 50 A in the app, which helps if your panel is tight.
Worth having as well
Common questions
- Can I use a standard wall outlet?
- No. Standard household outlets provide Level 1 charging at 3.7 miles of range per hour and take 83 hours to fill the battery from empty.
- What connector does the car use?
- The car uses a J1772 connector. This model year falls in the industry transition period, so confirm your car has a physical J1772 port or uses the included adapter before buying gear.
- What is the difference between peak rate and EPA charge times?
- Charging at the car's peak rate takes 10.4 hours, while the EPA test procedure takes 11.2 hours. The EPA test includes standard efficiency losses during the conversion process.
- Do I need a hardwired charger?
- Yes. A 48 amp continuous load exceeds the rating of standard wall receptacles, meaning the charging unit must be hardwired directly into the electrical supply.
Other vehicles
Charging times derived from EPA data for the 2027 Cadillac Vistiq 11kW Charger. Electrical requirements follow NEC 625.41, which sizes a circuit at 125% of a continuous load. Always have a licensed electrician verify your panel.